ORC Advanced® and PersulfOx® application reduces BTEX, TPHg, and TPHd at an active service station in Las Vegas

Case study highlights

  • Significant cost savings to client achieved using enhanced aerobic biodegration and In Situ Chemical Oxidation (ISCO)
  • Highly successful project, despite difficult caliche soil (sedimentary rock) found specifically in desert regions

An active service station in downtown Las Vegas, Nevada was contaminated with high levels of BTEX, TPHg, and TPHd in the soil and groundwater.

REGENESIS® partnered with Antea® Group, a leading environmental firm, to complete three ISCO injections. For the first injection, approximately 310 lbs. of PersulfOx® and 45 lbs. of ORC Advanced® were mixed with 211 gallons of water at a 15 percent solution for a total of 226 gallons of solution injected per well.

A total of 3,100 lbs. of PersulfOx, 450 lbs. of ORC Advanced, and 2,260 gallons of solution were injected during the second and third injection events. The injection pressures ranged from 35 to 40 pounds per square-inch (psi) with flow rates ranging from 6 to 10 gallons per minute. Closely monitoring flow rates and injection pressure allowed REGENESIS to successfully apply the products without any surfacing occuring.

Enhanced aerobic biodegradation and in situ chemical oxidation used to remediate difficult geology
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